Stanford prison experiment interviews, 40 years later
One of the guards, Dave Eschelman, had this to say:
What came over me was not an accident. It was planned. I set out with a definite plan in mind, to try to force the action, force something to happen, so that the researchers would have something to work with. After all, what could they possibly learn from guys sitting around like it was a country club? So I consciously created this persona.
Incredible.